body {
    font-family: 'Arial', sans-serif;
    background-color: #f4f4f4;
    margin: 20px;
}

h2 {
    color: #333;
}

a {
    text-decoration: none;
    padding: 8px 16px;
    margin-right: 10px;
    border-radius: 5px;
}

a.btn-blue {
    background-color: #3498db;
    color: #fff;
}

a.btn-gray {
    background-color: #717c6e;
    color: #fff;
}

a.btn-red {
    background-color: #ff0000;
    color: #fff;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

th, td {
    border: 1px solid #f6eded;
    padding: 8px;
    text-align: left;
}

th {
    background-color: #3498db;
    color: #fff;
}

tr:nth-child(even) {
    background-color: #f9f9f9;
}